Can you add to the list?
- Albanian: derr Indie kavie
- Danish: marsvin
Croatian: zamorac
Czech: morce
- Dutch: Guinees biggetje, Cavia, marmot (obsolete); caafje
- English: Guinea pig, Cavy
- Finnish: marsu
- French: Cobaye, Cochon d'Inde
- German: Meerschweinchen; Swiss German: Meersäuli; slang: Meeri
- Greek: indiko hiridio, piramatozoo
- Hungarian: tengeri malac
- Indonesian: Marmot
Irish: muc ghuine
- Italian: Porcellino d'India, cavia
- Japanese: marumotto
- Kurd: miskal
- Latin: Cavia porcellus
Mandarin Chinese: tunshu
- Polish: swinka morska
- Portugese: Porquinho da Índia, cobaia
- Rumanian: cobai
- Russian: marskaya svinka
Serbian: morsko prase, zamorce
Slovakian: morca
- Spanish: conejillos de Indias; cuy, cuya, cuye, cuyo; cobaya, cobayo
- Swedish: marsvin
- Turkish: kobay
Welsh: mochyn cwta